<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    .box{
        width: 100%;
        display: flex;
        justify-content: space-around;
    }
    .common{
        opacity:1;
        width: 100px;
        height: 300px;
        background-color: #bfa;
        white-space: normal;
        border: 1px solid red;
    }
</style>
<body>
    <div class="box">
        <div class="aaa common">你好呀呀呀呀呀呀呀this is a longggggggggggggg break all</div>
    </div>
</body>
</html>